66311734 has 4 divisors (see below), whose sum is σ = 99467604. Its totient is φ = 33155866.

The previous prime is 66311723. The next prime is 66311743. The reversal of 66311734 is 43711366.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43711366 = 2 ⋅21855683.

It is a junction number, because it is equal to n+sod(n) for n = 66311696 and 66311705.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16577932 + ... + 16577935.

It is an arithmetic number, because the mean of its divisors is an integer number (24866901).

Almost surely, 2^66311734 is an apocalyptic number.

66311734 is a deficient number, since it is larger than the sum of its proper divisors (33155870).

66311734 is a wasteful number, since it uses less digits than its factorization.

66311734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33155869.

The product of its digits is 9072, while the sum is 31.

The square root of 66311734 is about 8143.2017044895. The cubic root of 66311734 is about 404.7592614918.

The spelling of 66311734 in words is "sixty-six million, three hundred eleven thousand, seven hundred thirty-four".